Long spell durations and slots

[Hydromancer]

If you cast a spell with a duration of say 10 days, when the next day comes do you get the slot back?

Or would preparing a new spell in the slot used to create the original effect make the effect expire?

I ask because I'm looking at Delayed Consumption for the alchemist.

Delayed Casting wrote:

CASTING

Casting Time 1 standard action
Components S

EFFECT
Range personal
Targets you
Duration 1 day/level (D) or until discharged

DESCRIPTION
When you consume this extract, you quickly consume another extract of your choice-this second extract's effects do not come into effect until a later point. You must consume this second, companion extract on the round following delayed consumption or waste the extract. The companion extract can be no higher than 4th level, and you must pay any costs associated with the companion extract when you consume it.

At any point during the duration of this extract, you can cause the companion extract to take effect as an immediate action. You can only have one delayed consumption in effect at one time. If a second is consumed, the first is dispelled without any effect.

I have a party of 3 including myself.

My question is thus:

I hand out 3 of these infusions plus another infusion to actually use it with (6 infusions total) to provide each person with their own little 'contingency' effect.

When the next day comes, do I get all my extract slots back and do the delayed consumptions still stay in effect?

[Ravingdork]

Hydromancer wrote:

If you cast a spell with a duration of say 10 days, when the next day comes do you get the slot back?

Yes. Your expended slots replenish every day*. To my knowledge there is nothing in the rules that says otherwise.

*:

I'm speaking loosely of course, since you must still pray or prepare your spells in some cases. Also, I recall a caveat that said any spells cast within the last 8 hours count against your new daily allotment.

[Hydromancer]

Ravingdork wrote:

** spoiler omitted **

Does that count for alchemists?

I know we are not spell casters, just that certain spells with choices to be made when the spell is 'cast' happens when I drink it.

[DM_Blake]

Yes, it works for alchemists. You get all 6 extracts back, and the "contingency effect" is still in effect.

[Ravingdork]

DM_Blake is correct. Advanced alchemy works just like spellcasting, except where specifically described as being different.